TIMING MARK WRONG FROM FACTORY !!!!!!!!!!! EEEEEEEEEEEEEEEEEEEEEEEEEEEK !!!!!!!!!!!!!!!
time to experiment. more later. fred zampa
Re: egad
-
lyletrudell
- Posts: 56
- Joined: Wed Apr 14, 2010 12:54 pm
Re: cam shaft mark off
Updated post, want the info to be as accurate as possible.
The slot should be the best spot to get cam orientation, it should also be in alignment with the ignition locator pin. This is where the cam was located off to grind it.
The other mark is a casting mark and it might not be right, it may have been used for reference when the rough casting was being machined.
Problem area:
This Honda engine, like any over head cam design must be machined accuratly from the factory for the height dimension between the crank centerline and cam centerline! This dimension must be maintained!
If you or a past owner machined any material off the cam housing, head, cylinders or cases then the cam timing will be "Retarded".
Also the gaskets must be the stock thickness.
If the timing is off, using thicker/thinner gaskets is one way to adjust timing, like Blake said. But you have to check cam timing first to adjust, or know what machining has been done to the engine.
If you know cam specs for this engine, then the only way to do it right is use a degree wheel and check the cam timimg. I will check mine when I get it back together. When you only have 36 Hp, getting everything right is important.
Lyle
The slot should be the best spot to get cam orientation, it should also be in alignment with the ignition locator pin. This is where the cam was located off to grind it.
The other mark is a casting mark and it might not be right, it may have been used for reference when the rough casting was being machined.
Problem area:
This Honda engine, like any over head cam design must be machined accuratly from the factory for the height dimension between the crank centerline and cam centerline! This dimension must be maintained!
If you or a past owner machined any material off the cam housing, head, cylinders or cases then the cam timing will be "Retarded".
Also the gaskets must be the stock thickness.
If the timing is off, using thicker/thinner gaskets is one way to adjust timing, like Blake said. But you have to check cam timing first to adjust, or know what machining has been done to the engine.
If you know cam specs for this engine, then the only way to do it right is use a degree wheel and check the cam timimg. I will check mine when I get it back together. When you only have 36 Hp, getting everything right is important.
Lyle